Source : Webster's Revised Unabridged Dictionary (1913)

Outline \Out"line`\, v. t. [imp. & p. p. {Outlined}; p. pr. &
   vb. n. {Outlining}.]
   1. To draw the outline of.

   2. Fig.: To sketch out or indicate as by an outline; as, to
      outline an argument or a campaign.